Wirthlin
Wirthlin is a Swiss surname. Notable people with the surname include:
- Joseph B. Wirthlin, American businessman and member of the Quorum of the Twelve Apostles of The LDS Church
- Joseph L. Wirthlin, the eighth presiding bishop of The LDS Church
- LeRoy S. Wirthlin, professor at Harvard Medical School and later a practicing surgeon
- Richard Wirthlin, prominent American pollster, Ronald Reagan's chief strategist